The start-up strategy of shortcut nitrification in SBR under low ammonia at room temperature - Details

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Abstract：

The　start-up　of　nitrosationin　SBR　was　analyzed　with　different　seeding　sludge　strategy　and　influent.　The　results　showed　the　quickly　start　up　of　nitrosation　when　seeding　nitrosation　sludge　with　low　dissolved　oxygen　(DO=0.30　mg/L)　and　no　accumulation　of　nitrite　when　seeding　nitrification　sludge　after　29days　(58　cycels)　operation.The　rate　of　nitrosation　could　be　above　60%　in　27days　(54　cycles)　when　alternative　high-low　dissolved　oxygen　was　adopted.No　nitrite　was　accumulated　when　seeding　nitrification　sludge　under　low　dissolved　oxygen　(DO=0.30　mg/L),　with　the　effluent　of　A/O　biological　phosphorus　removal　process　with　the　C/N　of　0.40-0.93　after　32　cycles,　while　the　start-up　of　nitrosation　was　realized　with　the　influent　from　septic　tanks　with　the　C/N　of　3.50-5.34.

Keyword：

Dissolved oxygen Temperature Dissolution Ammonia Reactor startup Biological water treatment Nitrification

Author Community：

[ 1 ] [Li, Dong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Liu, Li-Qian]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wu, Di]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Zhang, Gong-Liang]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Gao, Wei-Nan]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Zhang, Zhao]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Zhang, Jie]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 8 ] [Zhang, Jie]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China